Door operating engine and safety system



G, W, MEYERS DOOR-OPERATING ENGINE AND SAFETY SYSTEM Filed May 6. 1922 5 Shaves-Sheet l 1 INVENTO g; M. M 7 4 BY ATTORNEYJ 1927. May 31 G. w. MEYERS DOOR OPERATING ENGINE AND SAFETY SYSTEM Filed May 6. 1922 5 Sheets-Sheet 2 INVENTOR L'L y Z iv g 5-2 14; ATTORNEY 1,630,667 May 31 1927' I G. w. MEYIERS DOOR OPERATING ENGINE AND SAFETY SYSTEM Filed May 6. 1922 5 Sheets-Sheet 3 INVENTOR BY ATTORNEY May 31 1927. I 1,630,667

- G. w. MEYERS DOOR OPERATING ENGINE AND SAFETY SYSTEM Filed May 6. 19 22 5 Sheets-Sheet 4 \&\\\\\\\\\ BY 1L4- ATTORNEYS May 31 1927. 1,630,667

G. W. MEYERS DOOR OPERATING ENGINE AND SAFETY SYSTEM Filed May 6. 1922 5 Sheets-Sheet 5 MYW BY 41 ATTORNEYS Jill I so

GEQDIE/GE W. MYERS, @F WEEKLY,

mimic @I? F om noon

Application '6,

This invention relates to elmtricelly eon trolled door opereting end surety mechanisms which ore semi-nutomntic end operuble directly from the power line. a

A further object includes the provision end errengement of n sple end door opereting end mtety mechnnism, where by electricul end mechunicel eficiency is maintained et e mum. 6

Another oloject embrnces the construct on of e motor end door opereting reduction engine to thereby control n system of doors from o power source in coon with the propelling power oil the cor.

A fumher object includes the constructiou end errengement of e sefety door control mechenism whereby at door, or group of doors, meeting an obstruction, will ontometicelly reverse the motor end control eng A still further object includes the provision of mechenism whereby, under certuin renditions, the door clos control mechm .nism will he rendered tpmpornrily inch-ective.

@ther objects will eppeer hereinafter, and l ettein these objects by the mechanism end arrangement of parts illustrnted in the sccompenying drawing, in which Fig. l is s view partly in elevution end portly in section of e control motor end reduction engine; a

Fig. 2 is a section taken on the lines 22 of Fig. 1, through the upper reduction geer end the housing therefor;

Fig. 3 is a plan view. of the cross-heed end boss-plate;

Fig. 4 is a sectional view, in part, token on the lines H of Fig. 1;

Fig. 5 is a. view showing the door operating mechanism in elevation and mounted on top of the door sill, with doors closed;

Pg. 6 is e. plan view thereof with the doors in open position; a

Fig. 7 is e part of on urged plan view showing the doors in closed tion; a

Fig. 8 is 'a plan largely g in: ntro showing the several control circuits and safety trip mechanim with push-button control;

Fig. 9 is a view in elevation showing the releys and connections; and

Fig. 10 is an elevation showing the circuit control entrance step.

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Similar numerels refer to like parts throughout the several views.

lit is umong the special purposes of my invention to so construct end urrunge my metor end control mechanism us to operate the some directly from the power line in conjunction with the propulsion motors, it deot prop erly wound motors are mounted in series.

eech motor operates its particular set of door operating mechanism in the manner stoted ubovew llt is obvious, however, that, if desired, the mechanism may be operated from suitehle storage battery system. Where, for example, the current rectly from n power line of n 600 volt system, I mount six shunt wound motors in series to thereby operete us many reduction engines for opening and closing their respective doors or pairs of doors. These doors may he of the folding, or of the sliding type usis desired or mode necessuryinnder controlling conditions. Under predetermined conditions, and with aid of proper resistances and relays, my semi-automatic safety mechanism is elso operated directly from the some source of power, and the entire mechanism mey he ut into operution by closing proper circuits y means of the usunl push buttons. Referring now to the drawings, o shunt wound motor 10, of desired voltage, is mounted directly on the upper gear housing ll of the reduction engine 12. The npper housing of the engine rests directly on a lower housing 13, which in turn rests .on u buss-plate it, and these ports ere held together by 'bolts 15 end 16. Within the housings end base-plate of the reduction engine there operate the speed reducing mechanism in the manner described below. From on inspection of Fig. it, it is evident that the lions ings serve as 2. support for the reduction goers end yolres. They further serve also to form o on for retaining lubricants wherein the sold ports flout.

Keyed directly to the nrmature shaft 1?, is it drive pinion 118, which meshes with three idler spur goers l9, mouiited 120 sport on e plenetery reduction yohe 2t). The teeth of the idler goers also mesh with an annular geer 21, which may form n port of the outer housing ll, or be secured therein if desired. Yoke so is provided with a. reduction pinion 22, which, similar to the armature driven is taken ditill till

lllltl with a set of three idler gears second reduction yoke 24, those of the first or upper reduction yoke. The gears 23 also mesh with an annular gear 25 in housing 13. To the extension shaft 26 of yoke 24 is fastened a drive plate 27 which has eccentrically secured thereto a drive crank 28, as the drive plate operates back and forth through 186 due to the rotation of the motor in either direction. The drive crank operates to and fro in a slot 29 of the cross-head 30, and thereby causes the cross-head to slide back and forth in the base plate. Grease wells 30' maintain lubricant for proper lubrication.

From the description thus far given, it is evident that the rotary motion of the motor may be reduced to any desired degree, depending upon the number andratio of the reduction gears, and that this motion is finally converted into rectilinear motion which is available, among other uses, for opening and closing doors, for example, on street, subway and railway cars, or the like. To thus obtain converted motion from a high speed motor, it is, of course, understood that the motor is caused to rotate in either direction as may be required by controlling conditions.

As an example of utilizing the reduced and converted motion for opening and closing doors on cars, for example, I have elected to illustrate its application to doors of the folding type. In the specific instance herein illustrated the cross head 30 is provided with extensions 31, at either end, which extensions terminate in link connections 32 for pivotally uniting adjustable connection links 33. These links are connected by means of adjustable clevis 34 to gear segments 35, by any suitable means, as screw bolts 36. The link gear segments 35 co-operate with door moving segments 37, which are securely fastened to the door of door shafts 38 for swinging doors 39 open or shut. Hingedly connected to doors 39 are companion doors 40 having trackers 41 to guide the doors for folding and unfolding when opened and closed, as is well understood.

Directly connected to the link connections of the cross-head and moving therewith, are the cross-head travel limits or circuit breakers 42 and 43, for breaking circuits at 44 and 45, respectively, and to thereby limit the rotation of the motor, and likewise the travel pinion, meshes 23, carried on a and arranged like of the cross-head and the movements of the 46 and 47 doors in corresponding directions. By thus interrupting the respective. circuits, relays drop back to normal for the door opening or door closing movements of motor and cross-head. By closing the circuit, as by a push button 48, relay 47 is energized to cose the motor circuit, and the motor is rotated in the door opening direction, thus causing the operative link connections and associated parts to move from the closed door position as indicated in Figs. 5 and 7 to the open door position as represented in Fig. 6, for example. As the latter position is reached, the corresponding cross-head travel limit interrupts the relay circuit, thus causing the relay to drop back to normal, and stopping the motor by breaking the motor circuit. To close the doors the door closing button 49 is pushed to energize the door closing relay 46, which then closes the motor circuit to rotate the motor in the door closing direction. Under normal conditions the reverse operation now takes lace and the doors are quickly and quietly c osed.

It frequently happens, however, that conditions arise wherein it is important that the doors be stopped from being closed or even reversed from a closing movement, as-

where a passenger enters the car, and when he is still in the doorway and is struck by the closing door or doors. To avoid accidents under these or similar conditions, I have provided a system of safety operating and automatic control mechanism, in general, in Fig. 8, in connection with the general plan, and the various electric control circuits and their functions as operated in a push button control. The mechanism which prevents the doors from being closed comprises a circuit opening safety device 50, which is kept in open position by the car step when the step is pressed down, as, for example, by a passenger stepping thereon to enter the car. The weight of the pas- .senger on the step depresses the springpressed contact plug carrying contacts 52, and opens the circuit at 5O of the current closing button 49 to thereby prevent the guard, or operator, from closing the doors while a passenger enters the car and is still on the step. As soon as the step is free, it will assume the position indicated by the dotted lines, thus permitting the circuit to close in the safety circuit opener 50, and the closing relay 46 can thenv be energized by closing push button 49. j

For opening the door when push button 48 is closed, the current travels from the positive side of the power source, through a resistance, the dotted line to magnet 47, contacts 67, push button switch 48 and thence to the negative side of the power source. For closing the door, when ush button switch 49 is closed, the current ows from the positive side of the ower source, through a resistance, the dotte line to magnet 46, contacts 66, push button 49, circuit device 50, and thence to the negative side of the ower source I it now happens that a passenger is in the path of the closing doors, and is struck thereby, a tripping mechanism 53 automatio hi all prises a ruhher tuhe passenger, or even his hand,

, ployed.

nesooov tally cuts in the motor reversing relay 5t, cause the circuit is closed at 6d and and causes the motor to he reversed from the door closing to the opening position. The doors then continue to open until the corresponding cross-head travel limit interrupts the opening circuit and dropsthe relay haclr to normal. Since the closing relay is still energized, the door operating engine will automatically reverse and the doors will, in the ahsence of further obstructions, close in the manner above stated. To prevent the operation from accidentally short circuiting or interrupting the operation of the motor after having been set in motion hy energizetion of the proper relay, 1 have introduced automatic circuit loreakers (lid and 67 which will open the moment when its corresponding relay closes the contects C, G or Q), 0. My automatic tripping mechanism com 55, extending practically the ill length of the inner edges of doors 56 and 57, and the safety relay tripping and circuit closing device 53, which may he carried on the upper edge of the inner doors. The safety tube 55 fits tightly on plug 58 of the circuit closer 53, and ter minates in a cup extension 59 huving it screw threaded head fill for the reception of an adjustahle contact plug 61L A head 62, integral with plug 58, and having a hole therethrough, slidshly carries a pneumnth cally operated contact cup 6d, for closing the circuit through the adjustable contact 65, when the safety tube is compressed, however lightly, as by striking the hody or? n The increased pressure thus caused is counicnted cup 64, which is then raised to contact closing position, indicated by the dotted lines, thus closing the relay circuit nnd energizing re lay on in the manner outlined alcove,

llfhile l have designed my construe -on for volt shunt Wound motors in series, it is evident other may he In all cnses are the fields 7Q constantly energized, thereby producing n condition admitting of great tlesrihility ar mature control, he appears further the dingrammatie outlay of Fig. 8, the o sting circuits are so arate circuit, and are contro k huttons and the automatic control mechanism ()hviously the push huttons he located at any point on the cor or train, or even at a station platform, as may he d sired, for operating any numher of control circuits and Whilell have herein illustrated a unit control for one set of doors, it is n- :derstood that device muy he applied to each car in a train of cars, which may he operated as stated ahove, or it may he controlled so as to he operated hy individual guards.

It is tobe undersd that, olthough l have irom the led solely by the Within the spirit and scope of my invention will no doubt presentthemselves to those versed in the art.

l/Vhat I claim, therefore, as new and uselid and or my own invention, and desire to have protected by Letters Patent, is:

l, in a door engine for operating our doors to permit passengers to enter or leave the car, a prime mover mounted to rotate in either direction, means tor initiating rot motion in said prime mover in either direction, means for reducing soid rotary motion converting the same into recmotion to oscillate Within predetermined limits, moons for autoatica-lly consaid movements Within said limits to open and close doors, and means controlled by :1 passenger in a doorway said doors from closing.

2., ln s. door engine, a prime mover mounted to in either direction, for initiating rotary motion insaid prime mover direction, means rendered ehective through abnormal conditions for automatireversing sold motion from one soid moving directions, menus for reducing end converting said rot-c y motion to oscihatory movements, and means ing sold movements in either direction,

8 s door engine, it prime mover mounted rotate in either direction, menus for rotary motion in prime mover means rendered ehective conditions for temporari in either direction, through nhnormel moving direct converting s rd rotary motion to oscilla= ojy and means for com-lining said rot 37 motion and oscillatory moven predete mined or engme, the comhimctnte to rotate ither oereting said door a dent electric circui the field Windii for ener, nredetemiined r of ther direction and means -ed opercti ve hy n in the said door at door engine, the eomhinotion door mechenism on elec motor mounts to rotste either dizection for operating said door mechanism, independent 'electriccircuits one for preventing for orrestall as various modificatill lid

for constantl excitin -the field windin s of i sold motor, end ormatnre of saidmotor under predetermined p a o the other ror energizing theconditions to either close or open the doors, and means for temporarily reversing the motion of the armature from one of its directions, thereby temporarily preventing the door mechanism from continuing to close the doors.

6. In a door operating engine, the combination of door shifting mechanism andan electric motor mounted to rotate in either direction for operating said door shifting mechanism, a planetary reduction device, and means cooperating with said device to convert rotary motion into rectilinear motion, independent electric circuits, one for constantly exciting the field windings of said motor, and the other for energizing its a1- mature under predetermined conditions, to either close or open the doors, and means for preventing the door shifting mechanism from becoming operative.

In testimony whereof I have hereunto set my hand on this 4th day of May A. D. 1922.

GEORGE w. MEYERS. 

